The Repentance Tower is a very rare example of a mid-16th century watch tower standing on Trailtrow Hill. Built in 1565 by John Maxwell, the tower takes its name from an inscription Repentance carved on the stonework above the entrance door.
The watch tower remained with the Maxwells until in around 1627 the sixth Lord Herries sold Hoddam Castle and the tower to Sir Richard Murray of Cockpool (Comlongan) Castle. The barony and castle were purchased in 1690 by John Sharpe and remained with that family until 1878.
Visby Cathedral (also known as St. Mary’s Church) is the only survived medieval church in Visby. It was originally built for German merchants and inaugurated in 1225. Around the year 1350 the church was enlarged and converted into a basilica. The two-storey magazine was also added then above the nave as a warehouse for merchants.
Following the Reformation, the church was transformed into a parish church for the town of Visby. All other churches were abandoned. Shortly after the Reformation, in 1572, Gotland was made into its own Diocese, and the church designated its cathedral.
There is not much left of the original interior. The font is made of local red marble in the 13th century. The pulpit was made in Lübeck in 1684. There are 400 graves under the church floor.